2023Hudson Valley Auctioneers LLC Beacon NYJewelry. Vintage Modernist Mid Century Denmark BN Bert Nienhuis enamel sterling silver large roundSee Sold Price
2022Medusa AuctioneersAn earthenware vase with a line decoration all around, design Bert Nienhuis 1903-'10,See Sold Price
2011Quittenbaum Kunstauktionen GmbHPateelbakkerij De Distel, Amsterdam. Table clock, circaSee Sold Price